Dockerfile & image & hub

在docker hub建立自己的儲存空間(registry)。練習上傳(push)在本地出的映像檔(image)到自己的儲存空間下的儲存庫(repository)。

step1 write a dockerfile

FROM node:12.22.1-alpineWORKDIR /appCOPY . .RUN npm installEXPOSE 8080CMD ["npm","run","dev" ]

step2 create a image

docker build -t node12-app .

step3 run image

give args

open on localhost

step4 set image with tag

local image name : node12-app my docker hub / repository name : jason0103/node12-app version : 1

docker tag node12-app jason0103/node12-app:1

step5

push the image to your registry of docker hub

docker push jason0103/node12-app:1